Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!apple!news
From: bell@apple.com (Mike Bell)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Virtual memory
Message-ID: <52578@apple.Apple.COM>
Date: 8 May 91 03:14:05 GMT
References: <1991May8.014358.10292@ux1.cso.uiuc.edu>
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Reply-To: bell@apple.com (Mike Bell)
Organization: Apple Computer, Inc.
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In article <1991May8.014358.10292@ux1.cso.uiuc.edu>, resnick@cogsci.uiuc.edu 
(Pete Resnick) writes:
> Path: apple!decwrl!sdd.hp.com!news.cs.indiana.edu!ux1.cso.uiuc.edu!resnick
> From: resnick@cogsci.uiuc.edu (Pete Resnick)
> Newsgroups: comp.sys.mac.programmer
> Subject: Virtual memory
> Message-ID: <1991May8.014358.10292@ux1.cso.uiuc.edu>
> Date: 8 May 91 01:43:58 GMT
> Sender: usenet@ux1.cso.uiuc.edu (News)
> Organization: University of Illinois at Urbana
> Lines: 15
> 
> I believe this has been discussed before, so e-mail replies will be fine.
> 
> What can and cannot be paged out if VM is active? For instance, can paging
> occur at interrupt? If my program contains a routine that can be called at
> interrupt, can it ever be paged out? Is the device manager used for paging
> or is it a separate entity? Basically, how much is really done with VM?
> 
> Thanks.
> pr
> --
> Pete Resnick             (...so what is a mojo, and why would one be rising?)
> Graduate assistant - Philosophy Department, Gregory Hall, UIUC
> System manager - Cognitive Science Group, Beckman Institute, UIUC
> Internet/ARPAnet/EDUnet  : resnick@cogsci.uiuc.edu
> BITNET (if no other way) : FREE0285@UIUCVMD


     There is a new call, DeferUsrFn, that should be used in completion 
routines to protect against page fault problems. Tech Note #285 does a good job 
explaining the in's and out's of VM (including the DeferUsrFn call); it should 
be available at all of the normal places.



                       Mike